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Benefit Plans
 3 Months Ended
Mar. 31, 2023
Retirement Benefits [Abstract]  
Benefit Plans
14. Benefit Plans:
The following tables present the components of net periodic expense (benefit) for the Company-sponsored defined benefit pension and postretirement plans, which cover certain employees and retirees located in the U.S.
Defined Benefit Pension Plans
Three months ended
March 31,
20232022
Interest cost$871 $604 
Expected return on plan assets(837)(1,110)
Net periodic expense (benefit)$34 $(506)
Other Postretirement Benefit Plan
Three months ended
March 31,
20232022
Interest cost$6 $4 
Amortization of prior service credit(31)(53)
Amortization of net loss(1)1 
Net periodic benefit$(26)$(48)